package com.back.util;



import org.apache.commons.lang3.StringUtils;

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;

/**
 * 时间工具类
 * */
public class DateUtil {
    private final static SimpleDateFormat sdfYear = new SimpleDateFormat("yyyy");
    private final static SimpleDateFormat sdfDay = new SimpleDateFormat("yyyy-MM-dd");
    private final static SimpleDateFormat sdfDays = new SimpleDateFormat("yyyyMMdd");
    private final static SimpleDateFormat sdfTime = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    private final static SimpleDateFormat sdfTimes = new SimpleDateFormat("yyyyMMddHHmmss");
    private final static SimpleDateFormat formatTime = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    private final static SimpleDateFormat formatRiqi = new SimpleDateFormat("yyyy-MM-dd");
    private final static SimpleDateFormat formatShjian = new SimpleDateFormat("HH:mm");

    //获取时间年月日
    /**
     * 获取YYYY格式
     * @return
     */
    public static String getSdfTimes() {
        return sdfTimes.format(new Date());
    }

    /**
     * 获取YYYY格式
     * @return
     */
    public static String getYear() {
        return sdfYear.format(new Date());
    }

    /**
     * 获取YYYY-MM-DD格式
     * @return
     */
    public static String getDay() {
        return sdfDay.format(new Date());
    }


    /**
     * 根据时间获取 年月日
     * @param date
     * @return
     */
    public static String getRiqi(Date date) {
        return formatRiqi.format(date);
    }

    /**
     * 根据时间获取 时分
     * @param date
     * @return
     */
    public static String getShijian(Date date) {
        return formatShjian.format(date);
    }

    /**
     * 获取YYYYMMDD格式
     * @return
     */
    public static String getDays(){
        return sdfDays.format(new Date());
    }

    /**
     * 获取YYYY-MM-DD HH:mm:ss格式
     * @return
     */
    public static String getTime() {
        return sdfTime.format(new Date());
    }

    /**
     * 格式化日期
     * lml 20211210  formatTime
     * */
    public static String formatDate(String date) {
        return formatTime.format(date);
    }
    /**
     * @Title: compareDate
     * @Description: TODO(日期比较，如果s>=e 返回true 否则返回false)
     * @param s
     * @param e
     * @return boolean
     * @throws
     * @author fh
     */
    public static boolean compareDate(String s, String e) {
        if(fomatDate(s)==null||fomatDate(e)==null){
            return false;
        }
        return fomatDate(s).getTime() >=fomatDate(e).getTime();
    }

    /**
     * 格式化日期
     * @return
     */
    public static Date fomatDate(String date) {
        DateFormat fmt = new SimpleDateFormat("yyyy-MM-dd");
        try {
            return fmt.parse(date);
        } catch (ParseException e) {
            e.printStackTrace();
            return null;
        }
    }

    /**
     * 校验日期是否合法
     * @return
     */
    public static boolean isValidDate(String s) {
        DateFormat fmt = new SimpleDateFormat("yyyy-MM-dd");
        try {
            fmt.parse(s);
            return true;
        } catch (Exception e) {
            // 如果throw java.text.ParseException或者NullPointerException，就说明格式不对
            return false;
        }
    }

    /**
     * @param startTime
     * @param endTime
     * @return
     */
    public static int getDiffYear(String startTime,String endTime) {
        DateFormat fmt = new SimpleDateFormat("yyyy-MM-dd");
        try {
            //long aa=0;
            int years=(int) (((fmt.parse(endTime).getTime()-fmt.parse(startTime).getTime())/ (1000 * 60 * 60 * 24))/365);
            return years;
        } catch (Exception e) {
            // 如果throw java.text.ParseException或者NullPointerException，就说明格式不对
            return 0;
        }
    }

    /**
     * <li>功能描述：时间相减得到天数
     * @param beginDateStr
     * @param endDateStr
     * @return
     * long
     * @author Administrator
     */
    public static long getDaySub(String beginDateStr,String endDateStr){
        long day=0;
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
        Date beginDate = null;
        Date endDate = null;

        try {
            beginDate = format.parse(beginDateStr);
            endDate= format.parse(endDateStr);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        day=(endDate.getTime()-beginDate.getTime())/(24*60*60*1000);
        //System.out.println("相隔的天数="+day);

        return day;
    }

    /**
     * 判断日期距离现在是否超过多少天
     *lml 2021-06-26
     * */
    public static boolean getDaySub(String beginDateStr,int days){
        long day=0;
        boolean reurnVal = false;
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
        Date beginDate = null;
        Date endDate = new Date();

        try {
            beginDate = format.parse(beginDateStr);
            //endDate= format.parse(endDateStr);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        day=(endDate.getTime()-beginDate.getTime())/(24*60*60*1000);
        //System.out.println("相隔的天数="+day);
        if(day >= days){
            reurnVal = true;
        }
        return reurnVal;
    }

    /**
     * 得到n天之后的日期
     * @param days
     * @return
     */
    public static String getAfterDayDate(String days) {
        int daysInt = Integer.parseInt(days);

        Calendar canlendar = Calendar.getInstance(); // java.util包
        canlendar.add(Calendar.DATE, daysInt); // 日期减 如果不够减会将月变动
        Date date = canlendar.getTime();

        SimpleDateFormat sdfd = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        String dateStr = sdfd.format(date);

        return dateStr;
    }

    /**
     * 得到n天之后是周几
     * @param days
     * @return
     */
    public static String getAfterDayWeek(String days) {
        int daysInt = Integer.parseInt(days);
        Calendar canlendar = Calendar.getInstance(); // java.util包
        canlendar.add(Calendar.DATE, daysInt); // 日期减 如果不够减会将月变动
        Date date = canlendar.getTime();
        SimpleDateFormat sdf = new SimpleDateFormat("E");
        String dateStr = sdf.format(date);
        return dateStr;
    }

    public static Date parseDateTimeByStringDate(String str) {
        try {
            return sdfTime.parse(str);
        } catch (ParseException e) {
            e.printStackTrace();
            return null;
        }
    }

//    public static void main(String[] args) {
//        System.out.println(getDays());
//        System.out.println(getAfterDayWeek("3"));
//    }

    /**
     * 计算两个时间戳是否在规定时间内
     * scTimeMillis --- 以前的时间戳
     * timefW ---规定的时间范围(秒)
     * lml 2019-01-02
     * */
    public boolean getTimeDvalue(long scTimeMillis, long timefW) {
        boolean retValue = false;
        //获取当前时间戳  long currentTime=System.currentTimeMillis();
        long sec = ((System.currentTimeMillis() - scTimeMillis) / 1000 );
        if(sec > timefW) {
            retValue = true;
        }
        return retValue;
    }

    /**
     * 计算access_token 是否还在有效期内
     * lml 2018-12-20
     * */
    private static boolean dateDiff(String startTime) {
        boolean retValue = false;
        SimpleDateFormat sd = new SimpleDateFormat("yyyyMMddHHmmss");
        long nd = 1000*24*60*60;//一天的毫秒数
        long nh = 1000*60*60;//一小时的毫秒数
        long nm = 1000*60;//一分钟的毫秒数
        long ns = 1000;//一秒钟的毫秒数
        long diff = 0;
        //获得两个时间的毫秒时间差异
        try {
            diff = sd.parse(DateUtil.getSdfTimes()).getTime() - sd.parse(startTime).getTime();
        } catch (ParseException e) {
            e.printStackTrace();
        }
        long sec = diff%nd%nh%nm/ns;//计算差多少秒
        System.out.println("判断时间是否大于");
        if(sec > 7100) {
            retValue = true;
            System.out.println("-----------------------大于");
        }
        return retValue;
    }

    /**
     *String类型的时间转换为dateTime
     * */
    public static Date dateStrToDateTime(String oldDateStr) {
        /**
         * 判断某字符串是否不为空且长度不为0且不由空白符(whitespace) 构成，等于 !isBlank
         * lml 2021-07-04 07:39
         * */
        if (StringUtils.isBlank(oldDateStr)){
            return null;
        }
        Date date = null;
        Date date1 = null;
        String dateStr = null;
        try {
            dateStr = oldDateStr.replace("Z", " UTC");//是空格+UTC
            DateFormat df = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS Z");
            date1 = df.parse(dateStr);
            SimpleDateFormat df1 = new SimpleDateFormat ("EEE MMM dd HH:mm:ss Z yyyy", Locale.UK);
            date = df1.parse(date1.toString());
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return date;

    }

    public static void main(String[] args) {
       //Date date2 = new Date();
        System.out.println(DateUtil.dateStrToDateTime("2021-05-18T07:27:30.000Z"));
    }

    /**
     * 获取当前日期是星期几<br>
     *
     * @param date
     * @return 当前日期是星期几
     */
    public static String getWeekOfDate(Date date) {
        String[] weekDays = {"星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六"};
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        int w = cal.get(Calendar.DAY_OF_WEEK) - 1;
        if (w < 0)
            w = 0;
        return weekDays[w];
    }

    public static String getStringDateByDat(Date date){
        return formatTime.format(date);
    }

    public static String dayAd8(String d, int hour){
        try {
            Date parse = formatTime.parse(d);
            Calendar calendar = Calendar.getInstance();
            calendar.setTime(parse);
            calendar.set(Calendar.HOUR,calendar.get(Calendar.HOUR) + hour);
            return formatTime.format(calendar.getTime());
        } catch (ParseException e) {
            return null;
        }
    }
}
